Granted Patent B2

US 12,723,763 · App. 17/709,343 · Granted Sep 1, 2026

Inventors: Xueping Yan (Foshan, CN); Changyang Qiu (Foshan, CN)

Assignee: FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING CO., LTD.

F24C15/2021F24C15/2042F24C15/20F24D19/0092G01F15/061G01F15/068

Abstract

Claims (25)

1 . A control method for a range hood, wherein the range hood comprises a fan, and the control method comprises:

collecting a current operating state parameter of the fan;

determining a current air duct parameter based on the current operating state parameter; and

controlling operations of the fan based on the current air duct parameter and a predetermined control policy, comprising:

determining a current air duct blockage state based on the current air duct parameter;

increasing a rotational speed of the fan in accordance with a determination that the current air duct blockage state is a first blockage state;

decreasing the rotational speed of the fan in accordance with a determination that the current air duct blockage state is a second blockage state; and

controlling the fan to operate at a constant rotational speed in accordance with a determination that the current air duct blockage state is a third blockage state, the third blockage state being a zero air pressure state;

wherein said controlling the operation of the fan based on current air duct parameters and the predetermined control policy comprises:

determining a standard air duct parameter for a current gear based on the predetermined control policy;

modifying the standard air duct parameter to obtain an actual air duct parameter;

determining a target air volume based on the actual air duct parameter and the standard air duct parameter for the current gear; and

adjusting the rotational speed of the fan based on the target air volume;

wherein the standard air duct parameter comprises an air pressure and an air volume of the range hood,

wherein the range hood comprises an oil fume detection component disposed on an outer wall of a check valve,

wherein controlling operations of the fan based on the current air duct parameter and a predetermined control policy comprises:

controlling the rotational speed of the fan based on an oil fume concentration detected by the oil fume detection component.

2 . The control method according to claim 1 , wherein the current operating state parameter comprises a current electrical parameter of the fan.

3 . The control method according to claim 1 , wherein the predetermined control policy comprises a correspondence between air pressures and air volumes as determined based on operating characteristics of the fan.

4 . The control method according to claim 1 , wherein said determining the current air duct parameter based on the current operating state parameter comprises:

determining the current air duct parameter based on the current operating state parameter and a pre-stored correspondence between air duct parameters and electrical parameters.

5 . The control method according to claim 1 , wherein said determining the current air duct blockage state based on the current air duct parameter comprises:

determining the current air duct blockage state based on the current air duct parameter and a pre-stored correspondence between air resistances and air duct parameters.

6 . The control method according to claim 1 , wherein said adjusting the rotational speed of the fan based on the target air volume comprises:

increasing the rotational speed of the fan when the target air volume is lower than a preset threshold.

Assignments (1)

Priority Claims (1)

Continuity (2)

References Cited (23)